Sixity ATV Case Saver Chain Guard Silver 2004-2009 Yamaha YFZ450 Provides full chain width protection for your engine case, in the event of a chain de-railing or breaking. CNC machined from sturdy billet aluminum with beveled corners. Extra-hard anodized aluminum with micro polished surface for long-lasting brilliant color Custom tailor your ATV with unique case saver colors. Fast, easy installation. Manufactured by Sixity, Inc.